diff --git a/src/primaite/game/agent/observations/host_observations.py b/src/primaite/game/agent/observations/host_observations.py
index c9c73e16..02c0d17f 100644
--- a/src/primaite/game/agent/observations/host_observations.py
+++ b/src/primaite/game/agent/observations/host_observations.py
@@ -227,6 +227,8 @@ class HostObservation(AbstractObservation, identifier="HOST"):
         applications = [ApplicationObservation.from_config(config=c, parent_where=where) for c in config.applications]
         folders = [FolderObservation.from_config(config=c, parent_where=where) for c in config.folders]
         nics = [NICObservation.from_config(config=c, parent_where=where) for c in config.network_interfaces]
+        # If list of network interfaces is not defined, assume we want to
+        # monitor the first N interfaces. Network interface numbering starts at 1.
         count = 1
         while len(nics) < config.num_nics:
             nic_config = NICObservation.ConfigSchema(nic_num=count, include_nmne=config.include_nmne)